<?php
/**
 * Plugin Name:  Ranktim Article Sync
 * Plugin URI:   https://ranktim.com/integrations
 * Description:  Automatically fetches daily AI-generated SEO articles from ranktim.com and publishes them to your WordPress site.
 * Version:      1.9.5
 * Requires at least: 5.8
 * Requires PHP: 8.0
 * Author:       Ranktim
 * Author URI:   https://ranktim.com
 * License:      GPL-2.0-or-later
 * License URI:  https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain:  ranktim-article-sync
 *
 * ============================================================
 * SETUP & README
 * ============================================================
 * 1. Upload the entire ranktim-article-sync/ folder to
 *    /wp-content/plugins/ and keep the folder name as-is.
 * 2. Activate the plugin in WP Admin → Plugins.
 *    A WP-Cron job is scheduled automatically on activation.
 * 3. Go to WP Admin → Ranktim.
 * 4. Paste your Integration Key (generated in the ranktim.com App
 *    under Settings → Integrations → Create WordPress Integration).
 * 5. Choose Post Mode:
 *    • "Publish Directly" — articles go live immediately.
 *    • "Save as Draft"    — articles are saved as drafts for review.
 * 6. Click Save.
 *
 * The plugin polls ranktim.com every six hours via WP-Cron, fetches
 * articles scheduled for today, and performs a recent catch-up window daily,
 * and creates WordPress posts.
 * Duplicate items are skipped automatically.
 * After a post is created the plugin acknowledges delivery to
 * ranktim.com so the item is not re-sent on the next run.
 *
 * CONSTANTS (override in wp-config.php if needed):
 *   RANKTIM_BASE_URL          → API base URL  (default: https://ranktim.com)
 *   RANKTIM_API_TIMEOUT       → HTTP timeout in seconds (default: 15)
 *   RANKTIM_SYNC_RECURRENCE    → WP-Cron recurrence (default: ranktim_every_six_hours)
 *   RANKTIM_SYNC_LOOKBACK_DAYS → Previous days to re-check during catch-up (default: 7)
 *   RANKTIM_CATCHUP_INTERVAL   → Seconds between full catch-up checks (default: daily)
 * ============================================================
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

// ---------------------------------------------------------------------------
// Configurable constants
// ---------------------------------------------------------------------------
if ( ! defined( 'RANKTIM_BASE_URL' ) ) {
	define( 'RANKTIM_BASE_URL', 'https://ranktim.com' );
}
if ( ! defined( 'RANKTIM_API_TIMEOUT' ) ) {
	define( 'RANKTIM_API_TIMEOUT', 15 );
}
if ( ! defined( 'RANKTIM_SYNC_LOOKBACK_DAYS' ) ) {
	define( 'RANKTIM_SYNC_LOOKBACK_DAYS', 7 );
}
if ( ! defined( 'RANKTIM_SYNC_RECURRENCE' ) ) {
	define( 'RANKTIM_SYNC_RECURRENCE', 'ranktim_every_six_hours' );
}
if ( ! defined( 'RANKTIM_CATCHUP_INTERVAL' ) ) {
	define( 'RANKTIM_CATCHUP_INTERVAL', DAY_IN_SECONDS );
}

/** Current plugin version. */
define( 'RANKTIM_VERSION', '1.9.5' );

/** Absolute path to this plugin's directory (with trailing slash). */
define( 'RANKTIM_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );

/** Public URL to this plugin's directory (with trailing slash). */
define( 'RANKTIM_PLUGIN_URL', plugin_dir_url( __FILE__ ) );

// ---------------------------------------------------------------------------
// Load modules
// ---------------------------------------------------------------------------
require_once RANKTIM_PLUGIN_DIR . 'includes/class-logger.php';
require_once RANKTIM_PLUGIN_DIR . 'includes/class-encryption.php';
require_once RANKTIM_PLUGIN_DIR . 'includes/class-settings.php';
require_once RANKTIM_PLUGIN_DIR . 'includes/class-api-client.php';
require_once RANKTIM_PLUGIN_DIR . 'includes/class-schema.php';
require_once RANKTIM_PLUGIN_DIR . 'includes/class-cron.php';
require_once RANKTIM_PLUGIN_DIR . 'includes/class-migration.php';

Ranktim_Cron::register_schedules();

// ---------------------------------------------------------------------------
// Activation / Deactivation
// ---------------------------------------------------------------------------
register_activation_hook( __FILE__, array( 'Ranktim_Cron', 'activate' ) );
register_deactivation_hook( __FILE__, array( 'Ranktim_Cron', 'deactivate' ) );

// ---------------------------------------------------------------------------
// Internationalisation (i18n / l10n)
// ---------------------------------------------------------------------------
// No load_plugin_textdomain() call and no bundled translation files are needed:
// WordPress loads translations for this plugin just in time using the Text Domain
// header above, and translations are served from translate.wordpress.org.

// ---------------------------------------------------------------------------
// Plugin-list shortcuts
// ---------------------------------------------------------------------------
add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ), static function ( array $links ): array {
	$settings_link = '<a href="' . esc_url( admin_url( 'admin.php?page=ranktim' ) ) . '">' .
		esc_html__( 'Settings', 'ranktim-article-sync' ) .
		'</a>';
	$products_link = '<a href="https://ranktim.com/shopping/products" target="_blank" rel="noopener noreferrer">' .
		esc_html__( 'Products', 'ranktim-article-sync' ) .
		'</a>';

	array_unshift( $links, $settings_link, $products_link );
	return $links;
} );

// ---------------------------------------------------------------------------
// Bootstrap — wire everything together after all plugins are loaded
// ---------------------------------------------------------------------------
add_action( 'plugins_loaded', static function (): void {
	if ( is_admin() || ( function_exists( 'wp_doing_cron' ) && wp_doing_cron() ) ) {
		Ranktim_Migration::maybe_run();
	}

	Ranktim_Cron::register_runner();

	if ( is_admin() || ( function_exists( 'wp_doing_cron' ) && wp_doing_cron() ) ) {
		Ranktim_Cron::ensure_scheduled();
	}

	if ( is_admin() ) {
		require_once RANKTIM_PLUGIN_DIR . 'includes/class-admin.php';

		$encryption = new Ranktim_Encryption();
		$settings   = new Ranktim_Settings( $encryption );
		$api        = new Ranktim_Api_Client();

		( new Ranktim_Admin( $settings, $api ) )->register();
	}

	if ( ! is_admin() ) {
		( new Ranktim_Schema() )->register();
	}
} );